Standing-valve construction for well-pumps.



A. HUNTER. STANDING VALVE CONSTRUCTION FOR WELL PUMPS.

APPLICATION FILED MAY 25. 1912.

1,049,71 9.- Patented Jan.7, 1913.

m 5 I /4 (Z? I 11- ||l /,/1/ [/5 m El 6 ,24 i 1 U 22-- I g IHHI 32 L 5433 3 Inventor.

1 4/ 35 I cfiZZJd fi/zzzzz e 7 -40 5y witnesses.

UNITED"STATEBBPATENT OFFICE. I

ALVA HUNTER, OF BAKERSFIELD, CALIFORNIA, ASSIGNOR B. BOBB, or Los'ANGELES, CALIFORNIA.

STANDING-VALVE CONSTRUCTION non WELL-PUMPS.

Specification of Letters Patent.

Patented Jana, 1913.

Application filed May 25, 1912. Serial no. 699,653.

To all whom it may concern:

. the same, and from which any small amount i provide a a valvemechanism.

of sand that may accumulate, may be re moved without withdrawing thevalve mech anism entirely out of the well.

,A further object of my invention is to valve mechanism that j maybeutilized efficiently in oil wells in which there is a heavy gaspressure.

I accomplish these objects by means of the device described herein andillustrated in the drawings in which:

Figure 1 is a central-vertical section of a pump barrel mounted. in awell casing, illustrating my improved valve mechanism. Fig. 2 is anenlarged detail elevation of the Fig. 3 is a transverse 3-3 of Fig. 1;Fig. 4 section taken on Fig. 5 is a detail for limiting the sectiontaken on line is an enlarged transverse the line 44: of Fig. 1.

perspective view of a nut upper movement of the valve stopper. 35

Referring more particularly to the drawing 5 designates an oilv wellcasing of usual form which extends from the top of the ground to thebottom of the well, 6 a pump barrel in which is reciprocatingly mounteda hollow suction plunger 7 The lower end of the pump barrel .isexteriorlythreaded and engages an annular interiorly threaded recess 8formed 'inthe upper end of a casing 9 in which the valve mechanisms aremounted. The pump barrel G and casing 9 are stationary, being suspendedfrom the top of the well in any well known manner.

Suction plunger 7 is provided in the upper end thereof with a valve 10and a cage 11 therefor, the cage being in threaded engagement therewith.By inserting a washer into the end of the suction plunger, the annularedge 13 will serve as a stop for the wings of a spider 14 rigidlymounted on the upper end of a connecting rod 15, as clearly indicated'in'Fig. 1 of the drawing- Mountor ONE-HALF T0 WILLIAM ed in thecentrally disposed bore or recess 16 of the casing 9 is a standing valvemechanism 17, which preferably consists of a hollow cylindrical member18, the lower end beingsub-c'onical as at 19. This end seats inthe'sub-conical end of the central bore 16, as clearly shown in Fig. 1 ofthedrawing.

The outside diameterof bore 18' is of less diameter than the upper endof. the conical bore 19 and is exteriorly threaded as at 20 for thereceptioniof a sleeve21 exteriorly threaded on its lower end. Theupperend of this sleeve'presents an annular shoulder 22 that engages anannular rib 2 1 formed on a hollow valve seat 25. By seating valve whichis in screw-threaded engagement with said member, it will be observedthat the annular shoulder 23 will be forced into positive engagementwith the rib24 of seat 25 and hold the same in rigid engagement with thestanding valve 16. v

The lower endf connecting rod 15 is screw threaded from its lower endupwardly, and screw threaded engagement therewith is a ball valve 26which is adapted to seat on the valve seat 25 during the operation ofthe pumping mechanism. The

connecting rod 15 extends below the standing valve mechanism 17 and onthe lower end thereof is a limiting nut 27 which is adapted to limit theupward movement of the connecting rod 15 when oil is passing through thestanding valve 17, during the operation adjusting the nut 27 upwardly ordownwardly on rod 15 it will be apparent that the movement of the rodmay be automatically adjusted. 1 l

The lower end of easing 9 is provided with a recess 28 preferablysemi-spherical in configuration, the upper end of saidrecess connectingwith the centrally disposed recess 16. The lower end of said casing 9 isprovided with two vertically extending bores '29 and 30 which from thebase of casing 9 terminating in recess 28. In these bores 29 and 30, aredisposed valve mechanisms, preferably consisting of hollow cylindricalmembers 31, 32 which are in screw threaded engagement withthe bores 29and 30. The lower endof members 31 and 32 are'provided with bearof thepumping mechanism. By

extend upwardly seat 25 on the upper end of member 18 p ings 33 mountedin the center thereof and connected by spider arms 34 with the innersurface of members 31 and 32, the arms permitting a free andunrestricted flow of oil from the well upwardly into the valvemechanisms.

Interposed between the members 31 and 32 and the upper ends of bores 29and 30 which terminate in annular shoulders 35, are valve seats 36 whichare similar in configuration to the valve seat 25 which is attached tothe standing valve heretofore described. Mounted in bearings 33 arevertically disposed valve stems 37 to the upper ends of which aresecured valve stoppers 38, the balls seating onthe seats 36 as clearlyshown in Fig. 1 of the drawing. The lower ends of the valve stems arepreferably,

threaded, and each are provided with adjusting nuts 39 and lock nuts 40,tension springs 41 being interposed between the nuts and the bearings33. By means of nuts 39 and springs 41 I am enabled'to adjust thetension on ball valves 38 so as to control the pressure of gas in thewell.

In numerous oil wells, the presence of gas is often noted and sometimesthe pressure of the gas is so great as to cause the unseating anddisarrangement of the standing valve mechanisms thereby causing saidmechanisms to simply churn the oil instead of forcing it upwardlyand outof the well. By interposing spring valve mechanisms heretofore describedin the lower end of casing 9, this pressure may be readily and easilycontrolled without preventing the upward flow of the oil therethrough,this contributing greatly to the efiiciency 'of the pumping mechanismsmounted in wells having an undue pressure of gas.

By providing a ball valve construction as illustrated at 26 without theusual cage mechanism therefor, and having it in screw threadedengagement with rod 15, all danger of sand becoming unduly lodged aroundthe ball mechanism so as to render the mechanism inoperative is avoided.Also by employing a mechanism as above described, when it is founddesirable, for any reason, to clean and free the same from a smallamount of sand or other foreign matter which may happen to accumulatearound the same, I simply lift the valve mechanism 17 out of itsseat,raising and lowering the same until any sand or other matter is washedaway therefrom, thus savingthe expense and time of the connectingpulling the sucker rods of the well together with the plungers andstanding valves connected thereto, entirely out of the well to free thesame ofsand.

The operation of my device will be ap parent from the following: Whenthe suction plunger 7 is reciprocated in the pump barrel 6 on its upperstroke, it will draw the oil from the bottom of the well upwardlythrough the valve mechanisms located in the end of casing 9 upwardlythrough the valve mechanisms 17 and force the ball away from its seat,the nut 27 limiting the upward movement of the ball. The oil will thenflow upwardly into the barrel of the suction plunger and from therethrough ball valve 10 to the point of discharge. 7

What I claim is:

1. A well pump mechanism, a pump barrel having a suction plungerreciprocatingly mounted therein, a valve casing member secured to thelower end of said pump barrel, an adjustable ball valve mounted in theupper end of said casing, said casing being thereof with a recesstherein, and an automatic spring controlled check valve mounted in andclosing the lower end of said casing opening into the recess in thecasing.

2. In a mechanism of the class described, a pump barrel having areciprocating suction plunger mounted therein, a casing secured to thelower end of the pump valve, said casing being provided in the upper endthereof with a longitudinally disposed bore and having a recess thereincommunicating with said bore, a ball valve mechanism mounted in saidcentral bore, a threaded rod to engage said ball, a flat nut on said rodto adjust and to limit the upward movement of the ball stopper from itsvalve seat, said nut engaging said bore but not interfering with thepassage of fluids, and a plurality of automatic spring controlled valvesmounted in the lower end of said casing, said valves communicating withthe recess formed in the lower end of said casing.

In witness that I claim the foregoing I have hereunto subscribed my namethis 4th day of May, 1912.

ALVA HUNTER. lVitnesses Enw. A. KELLY, H. B. DoLoH.

comprising Copies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents, Washington, D. G.

provided at the lower end

